Cutting device



May 13, 1941. A. J, LURIE 98 CUTTI NG' DEVICE Filed Aug. 23, 1940Patented May 13, 1941 UNETED STATES PATENT OFFICE CUTTING DEVICE AugustJ Lurie, Chicago, 111. Application August .23, 1940, Serial No. 353,879

'7 Claims.

The present invention relates in general to a knife or cutting deviceand more particularly to such devices as employ safety razor blades orthe like for a cutting or scraping operation.

In the prior combination cutting and scraping devices employing a razorblade or the like, difficulty is encountered in quickly moving the bladefrom one adjusted position to another. Furthermore, the devices havebeen such, in many instances, that the blade Will not stay in anadjusted cutting or scraping position when under heavy operatingpressure. In addition, there is the ever-present danger in some of theprior devices of cutting the operator during use, or during adjustment.

One of the objects of the present invention is to provide a simple andefilcient cutting device or scraper employing a razor blade in which thecutting edge is protected when not in use.

Another object is to provide a device of this character in which theblade has two positionsa retracted, position and a working position.

Another object is to provide positive means spaced'from the cutting edgeof the blade for moving the cutting blade from one position to the otherthereby eliminating any possibility of cutting ones self in theoperation.

A further object is to provide a device of this character for positivelylocking the blade in either position.

Still another object is to provide a sturdy, simple, and inexpensivecutting and scraping device. i

There are other objects of my invention which, together with theforegoing, will appear in the detailed description that is to follow,taken in conjunction with the accompanying drawing illustrating oneembodiment thereof.

In practicing my invention I employ a metal handle which may be cast orstamped to the desired shape, and the end of the handle is so shaped asto furnish a guide or channel in which a blade slides from retracted tooperating position.

Fig. 1 is a top plan view of my improved cutting device or scrapershowing the blade in extended position;

Fig. 2 is a bottom plan of the same device;

Fig. 3 is a fragmentary enlarged section taken along the line 33 of Fig.2, looking in the'direction of the arrows; and

Fig. 4 is an enlarged end elevation of the device showing the manner inwhich the blade is guided.

Referring now to Fig. 1 of the drawing, the

blade guide 6.

reference character 5 .designates the handle which is cast or stampedfrom any suitable metal in the shape shown. A knife or blade guide 6rectanguarly shaped is formed integrally with the handle 5 and providedwith upwardly extending flange portions along opposite sides thereof.The blade guide 6 is of suitable width to receive a blade 8 which may bethe usual safety razor blade, although other blades of a similar sizeand shape are equally suitable. The blade guide 6 is provided with arectangular slot 9 which length determines the travel of the blade 8from retracted to operative position.

A pair of depression-s l9 and II are formed on either side of the bladeguide 6 suitably spaced to determine the travel of the blade 8 fromretracted to operative position, and cooperate in maintaining a blade ineither of the two adjusted positions. A substantially rectangularlyshaped blade holder I2 is formed from suitable metal and is providedwith upstanding flanges l3 cooperating with the flanges l of the Theholder I2 is provided with a pair of depressed lugs l4 adapted topenetrate the depressions l0 and H and so look the blade in one of twopositions.

The blade holder I2 is provided with a rectangularly shaped opening [5(Fig. 1) adapted to receive the rectangularly shaped shank of a screw l6which fastens ,the blade 8 in position in the holder l2 and penetratesthe adjusting slot 9 in the blade guide 6. The screw I6 is provided witha rounded head I! and a knurled adjusting nut [8 which may be easily andconveniently grasped by an operator adjusting the position of the blade.

The device is assembled by placing the. screw H5 in the slot 9, thenputting the blade 8 in position in the blade guide, followed by theblade holder I2 positioned upon one face of the blade, and the adjustingnut I8 on the screw it. Loosening the adjusting nut permits the blade tobe moved from retracted to operative position, where tightening of thenut l8 causes the lugs I4 to be tightly clasped into either of thedepressions I0 and H, thus locking the blade in one of two positions. Ofcourse, the blade 8 may be adjusted to a position between these two, ifnecessary, though in such an instance it is only held frictionally andnot positively locked.

It will be seen that my device permits easy movement of the blade fromretracted to operative position with a positive guide from one positionto the other, with no danger of the operator being cut in suchmanipulation. This device may be used in the customary manner for ascraper, knife, box opener, etc., and a sturdy tool is assured under allconditions.

It will be seen that my improved device is simple, inexpensive toconstruct, and highly efflcient in operation.

My invention may be variously modified without departing from the spiritand scope thereof as indicated in the appended claims.

I claim:

1. A cutting device having a handle, a substantially rectangularlyshaped blade guide formed integrally with said handle having anupstanding flange along each of two opposite sides thereof forming aguiding channel, a blade holder adapted to slide in said channel, ablade in said guiding channel intermediate said blade guide and bladeholder and movable with said holder to a cutting and to a non-cuttingposition, means for clamping said holder to said guide with the bladeretained therebetween, and means for determining at least two clampingpositions for said holder.

2. A cutting device having a handle, a rectangularly shaped blade guideportion with a blade thereon having parallel upstanding flangesseverally along both sides thereof extending in the direction ofmovement of said blade on said portion and forming a guiding channel, arectangular slot in said blade guide parallel to said upstandingflanges, a screw with a rectangular shank penetrating said slot adaptedto carry a blade fitting in said channel, said blade being carried insaid channel and having an aperture receiving said screw, and with saidblade being movable in said channel with said screw to at least acutting and to a non-cutting position, and a nut on said screw andoperatively connected with said blade for clamping said blade in saidchannel in either a cutting or a noncutting position.

3. A cutting device including a handle and a blade carrying portion, aidblade carrying portion having a plurality of depressions therein spacedapart from one another in the direction of movement of a blade on saidportion, a blade carried on said portion, and clamping means on saidblade oppositely disposed thereon with reference to said portion havingextending means thereon selectively fitting into one of said depressionsupon movement of said clamping means, and assembly means operativelyconnecting said blade and clamping means together and extending throughboth for maintaining said clamping means and the blade therewith in anyone of a plurality of adjusted positions with said extending meansfitting in one-of said depressions at an adjusted position.

4. In a device as defined in claim 3, said blade carrying portion havingan upstanding flange on each of two opposite edges thereof extending inthe direction of movement of said blade and forming a guide channelthereon, and guide means on corresponding edges of said clamping meansengaging said flanges to maintain said clamping means and the bladetherewith in said channel.

5. In a device of the character described, a one-piece handle and bladecarrying member having a handle portion at one end thereof and a bladecarrying portion at the other end thereof, a blade carried on said bladecarrying portion, a blade holder positioned on said blade, assemblymeans extending through said blade holder, blade and blade carryingportion for maintaining said blade and holder and member in assembledcondition, a pair of depressions in said blade carrying portion definingtwo adjusted positions of said blade, and lug means on said blade holderengaging one or the other of said depressions depending upon theadjusted position of said blade with reference to said blade carryingportion, and cooperating guide means on said blade carrying portion andsaid blade holder to guide the blade holder and the blade therewith in asingle channel extending longitudinally with reference to the handleportion of said member.

6. A cutting device including in combination a handle, a blade carryingportion operatively connected therewith, a movable blade holdingportion, a blade on said blade carrying portion movable with said bladeholding portion and positioned intermediate said two portions, and meansclamping said two portions and said blade together in any one of atleast two adjusted positions, with one of said portions havingprojecting means thereon, and the other of said portions having a recesstherein corresponding to each adjusted position for receiving saidprojecting means and acting to define the adjusted positions of saidblade and said blade holding portion and acting with said clamping meansto maintain an adjusted position for said blade and blade holdingportion.

7. A cutting device having a handle, a guide portion thereon having anupstanding flange along one side thereof, a blade holder for holding ablade and having a flange cooperating with that of the guide portion andtogether with said blade adapted for sliding movement to at least acutting and a non-cutting position for said blade on said guide portion,said blade being positioned intermediate said guide portion and theblade holder, with said cooperating flanges acting to guide said bladeholder Whenit is moved and cooperating to retain said blade againstturning when it is in cutting position, cooperating means on said guideportion and said blade holder defining said two blade positions, andclamping means for said blade and'blade'holder.

AUGUST J. 'LURIE.

